1.70 Ct. Blue Sapphire from Ceylon (Sri Lanka)

If you are searching for a truly memorable center stone for an engagement ring, a standout gem for a bespoke commission, or a rare treasure to add to a serious collection, this sapphire answers that search. This transparent blue sapphire weighs 1.70 carats, and it is cut in an elegant emerald shape with exacting dimensions of 7.95 x 5.39 x 4.00 mm, offering a balanced presence that suits both classic solitaire settings and modern halo designs. Its vivid color intensity produces a deep, lively blue that is instantly recognizable as Ceylon origin, and the excellent polish ensures that each facet returns light with crisp, lively flashes. The clarity is graded as very very slightly included when evaluated at eye level, which means to the unaided eye the surface presents as clean, while the subtle internal features add personality and provenance without distracting from the gem's overall beauty. This sapphire has been professionally heat treated, a standard enhancement that enriches color and clarity in a stable and accepted manner, and its origin is Ceylon Sri Lanka, a region famed for producing some of the most sought after blue sapphires in the world.

Understanding the way this stone will behave once set is important for customers who want confidence in their purchase, and the emerald cut offers predictable and flattering light performance that highlights both color and clarity. The longer table and step facets of the emerald cut emphasize the stone as a window into its inner world, so the vivid Ceylon blue reads with a calm intensity rather than a scattered brilliance. That quality makes this sapphire sublime for a refined engagement ring, where you may want an elegant, understated statement that endures through changing trends. At 1.70 carats the gem has substantial presence on the finger without feeling oversized, and the dimensions of 7.95 x 5.39 x 4.00 mm make it easy to design a setting that enhances the stone rather than overwhelms it. The excellent polish sharpens facet junctions and helps create crisp reflections, which is especially important for an emerald cut, because the quality of the polish directly influences the perceived depth of color and the degree of luster when light moves across the stone.

One of the most compelling aspects of a natural sapphire are the inclusions, which I describe to customers as the stones unique identifiers, the tiny signatures that confirm its natural formation and tell a story no lab report can fully capture. This sapphire, with a very very slightly included clarity grade at eye level, displays subtle internal characteristics commonly associated with high quality Ceylon material. You may see delicate silk like rutile needles that diffuse light softly, minute mineral crystals that appear as pinpoints under magnification, and fine feather like lines that create a delicate texture within the stone. These inclusions do not obscure the gem or detract from its vivid color, instead they add depth, dimension, and authenticity. Inclusions also serve as a fingerprint allowing gemologists and experienced jewelers to match a stone to its history, and they provide collectors with reassurance that they are acquiring an unduplicated natural gem, not a synthetic or overly treated imitation. For many buyers, those tiny internal landscapes are what make the sapphire meaningful, because they are the natural record of heat, pressure, and time that produced this beauty beneath the earths surface.

When you are ready to make this sapphire the focal point of a ring, a pendant, or an investment collection, The Natural Sapphire Company stands ready to guide you through the final steps with attention to both design and lifelong wearability. We can recommend settings that protect the stone, such as four or six prong arrangements that keep the clean lines of the emerald cut visible, bezel styles that offer modern security, or delicate halo treatments that raise perceived size while keeping the Ceylon blue as the star. Because this gem has excellent polish and a vivid color intensity, it performs beautifully with both warm and cool metal choices, from warm 18 karat yellow gold that will deepen the blue slightly, to platinum or white gold that will present the color with crisp contrast. If you are choosing this sapphire as the symbol of a promise, as a family heirloom, or as a discerning collectors piece, know that its 1.70 carat weight, its exacting 7.95 x 5.39 x 4.00 mm dimensions, its emerald cut, and its very very slightly included clarity grade together create a gem that is both visually impactful and verifiably natural. Let us at The Natural Sapphire Company help you finalize a setting and provide any additional documentation you may desire, because our goal is to ensure your search ends with a stone that you are proud to wear and to pass on.